“We are pleased to complete the acquisition of Estech, and we welcome the team to AtriCure. This transaction provides substantial benefits to AtriCure and strengthens our leadership position in the atrial fibrillation market; we are excited about the opportunities that our combined businesses will bring to our customers,” said Mike Carrel, President and Chief Executive Officer of AtriCure.

AtriCure expects that the transaction will increase sales and marketing expense as well as research and development expenditures in order to accelerate clinical development and commercial sales of the combined product portfolio. While these expenses will increase on absolute dollar basis, AtriCure expects these expenses to decrease as a percentage of sales beginning in 2015. AtriCure expects the transaction to be dilutive to earnings in 2014 and accretive in 2015 and beyond.

Advisors

Piper Jaffray is acting as exclusive financial advisor, and Keating Muething & Klekamp PLL is serving as legal counsel, to AtriCure. Leerink Swann is acting as exclusive financial advisor, and DLA Piper LLP is serving as legal counsel, to Estech.

About Estech

Estech develops and markets a portfolio of innovative medical devices that enable cardiac surgeons to perform a variety of surgical procedures, while specializing in minimally invasive and hybrid ablation. The company’s COBRA line comprises a number of first-ever ablation technologies invented, developed, and brought exclusively to market by Estech. These include temperature-controlled RF energy delivery, Versapolar™ devices that provide both bipolar and monopolar energy, suction-applied tissue contact, and internally-cooled devices which provide superior ablation performance compared to other ablation systems. For more information, please visit www.estech.com.

About AtriCure, Inc.

AtriCure, Inc. is a medical device company providing innovative atrial fibrillation (Afib) solutions designed to produce superior outcomes that reduce the economic and social burden of atrial fibrillation. AtriCure’s Synergy Ablation System is the first and only device approved for the treatment of Persistent and Longstanding Persistent forms of Afib in patients undergoing certain open concomitant procedures. AtriCure’s AtriClip Left Atrial Appendage (LAA) exclusion device is the most widely implanted device for LAA management worldwide. The company believes cardiothoracic surgeons are adopting its ablation and LAA management devices for the treatment of Afib and reduction of Afib related complications such as stroke. Afib affects more than 5.5 million people worldwide.

Forward-Looking Statements

This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements that address activities, events or developments that AtriCure expects, believes or anticipates will or may occur in the future, such as earnings estimates (including projections and guidance), other predictions of financial performance, launches by AtriCure of new products and market acceptance of AtriCure’s products. Forward-looking statements are based on AtriCure’s experience and perception of current conditions, trends, expected future developments and other factors it believes are appropriate under the circumstances and are subject to numerous risks and uncertainties, many of which are beyond AtriCure’s control. These risks and uncertainties include the rate and degree of market acceptance of AtriCure’s products, AtriCure’s ability to develop and market new and enhanced products, the timing of and ability to obtain and maintain regulatory clearances and approvals for its products, the timing of and ability to obtain reimbursement of procedures utilizing AtriCure’s products, AtriCure’s ability to consummate acquisitions or, if consummated, to successfully integrate acquired businesses into AtriCure’s operations, AtriCure’s ability to recognize the benefits of acquisitions, including potential synergies and cost savings, failure of an acquisition or acquired company to achieve its plans and objectives generally, risk that proposed or consummated acquisitions may disrupt operations or pose difficulties in employee retention or otherwise affect financial or operating results, competition from existing and new products and procedures or AtriCure’s ability to effectively react to other risks and uncertainties described from time to time in AtriCure’s SEC filings, such as fluctuation of quarterly financial results, reliance on third party manufacturers and suppliers, litigation or other proceedings, government regulation and stock price volatility. AtriCure does not guarantee any forward-looking statement, and actual results may differ materially from those projected. AtriCure undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. A further list and description of risks, uncertainties and other matters can be found in our Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q.

TULLIS HEALTH INVESTORS INC.

The firm was founded in 1986 by Jim Tullis, a leading health care investment banker and 14-time Institutional Investor All-Star. Under his leadership, the Tullis family of funds has been investing successfully and exclusively in privately held health care companies through several funds for over 30 years. Considered a pioneer in healthcare focused venture and growth capital, the team invests in all major areas of the healthcare industry. US-based, with an office in North Palm Beach, Florida, the firm also has international operations including a presence in Beijing. The team combines extensive operating and clinical experience in the US and globally, with a strong history of successful health care private equity investing.

Investment Approach

Tullis provides equity and equity-related capital to small and emerging health care companies.Tullis focuses on companies that have already established operations or have completed a substantial portion of their development process for new products, technologies and services. Many Tullis companies have generated meaningful revenue and require capital in order to reach value-enhancing milestones in a defined two- to four-year period. Others are research and development stage medical companies which have passed key milestones, but require additional capital to achieve commercial status.